package chapter04.Example16;
class Animal {
    public void shout() {
        System.out.println("喵喵喵....");
    }
}
class Dog extends Animal {
    public void shout() {
        System.out.println("汪汪.....");
    }

    public void eat() {
        System.out.println("吃骨头.....");
    }
}
        public class Example16 {
            public static void main(String[] args) {
     Animal an = new Dog();
     Dog dog = (Dog)an;
     dog.shout();
     dog.eat();
            }
        }




